Johnson Controls

Johnson Controls: Over 130 Years of Building Automation Excellence

Few names carry as much weight in building automation and HVAC controls as Johnson Controls. Founded in 1885 by Warren S. Johnson — the inventor of the electric room thermostat — the company has spent well over a century engineering the systems that keep commercial and industrial buildings comfortable, efficient, and safe. What began as the Johnson Electric Service Company in Milwaukee, Wisconsin has grown into a global force with tens of thousands of experts operating in more than 150 countries, bringing together hardware, software, and services under one trusted brand.

At the core of Johnson Controls' product lineup is an unwavering focus on precision climate management. Their Temperature & Pressure Controls represent one of the brand's most storied product families, directly tracing back to Warren Johnson's original mission of automating building temperature regulation. Whether you're maintaining a data center, a commercial kitchen, or a multi-story office building, these controls deliver the reliable setpoint management that operators depend on.

Equally essential to any modern HVAC installation are the brand's HVAC Control Valves & Actuators. Johnson Controls offers one of the most comprehensive valve and actuator lineups in the industry — from ball valves and globe valves to butterfly valves — all engineered to regulate the flow of water and steam in response to controller signals. The VG1000 Series ball valves, for example, are recognized for superior wear resistance and tight pressure control across a wide range of applications.

Airflow management is handled just as rigorously through Johnson Controls' Damper Actuators & Accessories. Available in electric and pneumatic configurations, with torque outputs covering a broad operational range, these actuators precisely position dampers to manage ventilation, pressurization, and energy efficiency throughout a building's ductwork. Many models feature direct-coupled designs that eliminate the need for crankarms or additional linkage hardware, simplifying installation considerably.

Accurate data is the foundation of any intelligent control system, and Johnson Controls' HVAC Sensors & Probes are designed to deliver exactly that. From differential pressure and temperature to humidity and CO₂, these sensors feed reliable readings to building automation systems, enabling smarter, more responsive climate control decisions.

Rounding out the brand's control ecosystem are their HVAC Pressure Switches, which monitor duct and system pressure to protect equipment and maintain safe operating conditions. Johnson Controls pressure switches are widely used to sense airflow in ductwork and can be configured to trigger protective responses — such as de-energizing electric strip heaters — when airflow conditions fall outside acceptable parameters.

Across every product category, Johnson Controls brings a rare combination of deep engineering heritage and modern innovation. For contractors, facilities managers, and building automation professionals, the brand represents a trusted, single-source solution for the controls infrastructure that keeps HVAC systems running at their best.